package annotations;

import java.util.ArrayList;
import java.util.List;

class DClass {

    private Double d;

    public Double getD() {
        return d;
    }

    public void setD(Double d) {
        this.d = d;
    }
}

class Apple{
    void getWeigth(){};
}


public class Ttt {

    public static void main(String[] args) {
        List<String> l = new ArrayList<>();
        
//         Double a = Double.valueOf(1);
//         Float ff = 3F;
//         Float b = null;
//         String c = "123";
//         ff = c.equals("123") ? b : ff;
//        System.out.println((Boolean)null);
    }

    public static Integer save() {
        return null;
    }

}
